State and dynamics of forest fund indicators in se "skrypaivske educational and research forestry" (Forest-Steppe, Ukraine)
The peculiarities of forest fund indicators dynamics of Skrypaivsky educational and research forestry of Kharkiv National Agrarian University named after V.V. Dokuchaev (Kharkiv region, Ukraine) for the period of 70 years were studied on the base of forest accounting data and Forest Fund database. Recent dynamics of forest health condition was assessed on the base of forest monitoring data. Analysis of climate indices dynamics (from ClimateChart.net) for the region of study was performed.
Forest landscapes at the enterprise are typical for the left-bank Forest-Steppe of Ukraine. Over 90% of the area is occupied by English oak (Quercus robur L.) and Scots pine (Pinus sylvestris L.) stands, other species (black alder, aspen, willow, black locust, small-leaved lime and silver birch, poplar) are less represented. For the last two decades’ trend to change of dominant tree species in forest stands was revealed. Areas of Scots pine, English oak, and aspen stands slightly decreased, while the area of other deciduous stands, especially black locust, small-leaved linden, common ash, and black alder, significantly increased. Also significand increase in areas of Scots pine damaged by the root rot, which in turn indicates the deterioration of the sanitary condition of these stands.
During last decade pine stands suffer from biotic damage-root rot and bark beetles, and increased trees mortality is observed. In young planted forest substitution of pine to black locust is observed, in oak young planted forest areas other deciduous became a dominant tree species. Monitoring data showed long-term trend to deterioration of health condition. The tend to stands aging as well as decreasing of density of stocking and site class was revealed.
Climate data for the region of study showed trend to warming and aridization.